一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Diosmetin
520-34-3

Diosmetin synthesis

8synthesis methods
-

Yield:520-34-3 90.5%

Reaction Conditions:

with pyridine;iodine at 90;

Steps:

3 Synthesis of compound 1c

Hesperetin (5.0 g, 15.8 mmol) was dissolved in 80 mL of dry pyridine, added with iodine (4.8 g, 15 mmol), reacted at 90 °C, TLC followed the reaction process, the starting point disappeared to stop the reaction, after cooling to room temperature, Slowly add ice water under vigorous stirring to separate out a brown-black solid, filter with suction, wash the filter cake with 3% dilute hydrochloric acid until there is no pyridine odor, then use saturated sodium thiosulfate to remove unreacted elemental iodine, and dry to obtain a yellow crude product, Recrystallization from absolute ethanol gave 4.5 g of yellow powder with a yield of 90.5%.

References:

CN113956224,2022,A Location in patent:Paragraph 0032-0034

Diosmetin Related Search:

涟水县| 余姚市| 岐山县| 抚远县| 濉溪县| 太仆寺旗| 凤阳县| 旅游| 兴山县| 汝阳县| 定陶县| 交口县| 乳源| 建德市| 巧家县| 汉阴县| 天长市| 田东县| 耿马| 芦溪县| 濮阳县| 陇南市| 嘉义市| 丰城市| 抚州市| 文成县| 巴林左旗| 高淳县| 清水河县| 临朐县| 灌云县| 囊谦县| 枝江市| 滦南县| 桃江县| 井陉县| 耒阳市| 巨鹿县| 全南县| 乌什县| 五大连池市|